Diesel Injector Fuel Injector 0445120378 compatible with Bosch injector Nozzle Dlla152p2449

⑤ Use the resistance method to check whether the needle valve is stuck in the intuitive situation without removing the needle valve, remove the oil injector on the return oil pipe, start the engine, with an appropriate thick long wire, insert into the nozzle tasht, and then gently press the tail of the wire, if you feel the wire has a rapid and powerful movement up and down, that the injection needle works normally; If the wire does not move, it proves that the needle valve is stuck. When the multi-cylinder engine has intermittent knocking sound, it indicates that the pressure of the nozzle of one cylinder is too high. In the identification of which cylinder pressure is too large, can be used to pinch the method, that is, hand pinch the oil pipe, feel their pulsation when the oil supply. The oil supply pressure of the oil pipe with large pulsation is too large, so the adjusting screw of the oil injector should be loosened properly, and the sound of knocking the cylinder can disappear.

. The working performance of the diesel engine depends on the working performance of the fuel injector to a large extent, and the fuel injector is the most important precision couple of the fuel injector. Therefore, to understand the working performance of the nozzle and master its damage form is one of the keys to use a good diesel engine. The nozzle is subjected to mechanical, hydraulic and various corrosion wear in the work, which directly affects the performance of the engine. It is mainly manifested in the following aspects :(1) poor seal of needle valve and needle valve body. This is because the needle valve in the needle valve body reciprocating up and down high frequency impact movement process, resulting in the needle valve sealing cone and needle valve body seat surface forming fine nicks and metal fatigue flaking spots, resulting in poor valve surface sealing, oil nozzle dripping phenomenon, the diesel engine black smoke, carbon production and irregular tapping.